p+q-qpqr
pq+pr-pqpqr
pq+qr-prpqr
pqrqr+pr-pq
Source: বাংলাদেশ সেতু কর্তৃপক্ষ (সহকারী সাব-ইঞ্জিনিয়ার) 18-12-2020
Answer: pqrqr+pr-pq
Explanation:
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You should read | Questions
A tap can fill a tank in 6 hours. After half the tank is filled three more similar taps are opened . What is the total time taken to fill the tank completely?
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Three pipes A, B and C can fill a tank in 6 hours. After working at it together for 2 hours. C is closed and A and B can fill the remaining part in 6 hours. The number of hours taken by C alone to fill the tank is:
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একটি চৌবাচ্চা তিনটি নল দিয়ে যথাক্রমে ৮,১২ ও ২৪ ঘন্টায় পূর্ণ হতে পারে। তিনটি নল একসংগে খুলে দিলে চৌবাচ্চাটির তিন-চতুর্থাংশ পূর্ণ হতে কত সময় লাগবে ?
If Farhan were to add 5 gallons of kerosine to a tank that is already 3/4 full of kerosine , the tank would be 7/8 full. How many gallons of kerosine would the tank hold if it were full ?
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বাংলাদেশ ও বিশ্বের নদী, সাগর ও মহাসাগর
বাংলা ভাষার উদ্ভব ও বিকাশ
কম্পিউটার এর গঠন ও মেমরি
গড় (Average)
উৎপাদকে বিশ্লেষণ (Factorization)
জাতিসংঘ ও অন্যান্য আন্তর্জাতিক সংস্থা
সংখ্যা পদ্ধতি
প্রগ্রারমিং ভাষা ও সফটওয়্যার
ট্রেন ও গতিবেগ (Train & Speed)
ক্রিয়া ও ক্রিয়ার কাল
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